Dispensing appliance for at least two components

Abstract

The dispensing appliance for at least two components comprises a respective pump assembly for each component, each of said pumps being connected to a detachable container holding one of said components, and the pump outlets ending in a common but divorced outlet. Said pump assemblies are held in a frame which can be dismantled and reassembled, and the cylinders of said pump assemblies are composed of different segments. Such an appliance is compact and allows an easy change of metering ratios, simplified manufacture and cleaning.

I claim: 
     
       1. A dispensing appliance for at least two components, comprising: a respective pump assembly for each component, each of said pump assemblies having an inlet and an outlet, said inlets being connected to a detachable container which holds one of said components, and the outlets of said pump assemblies ending in a common outlet, wherein said pump assemblies are held in a frame which can be dismantled and reassembled, said frame comprising a respective frame plate both on a dispensing side and on a drive side thereof, the plates being detachably connected to each other and mutually adjustable by means of frame rods and nuts.   
     
     
       2. The dispensing appliance of claim 1, wherein said pump assemblies each comprise a piston and a cylinder and are disposed inside said frame in a housing having a common outlet but separate outlet channels for each cylinder, and wherein the cylinders of said pumps assemblies have equal lengths. 
     
     
       3. The dispensing appliance of claim 2, wherein the housing comprises a detachable front part comprising a front end. 
     
     
       4. The dispensing appliance of claim 3 wherein at least one side of said common outlet is provided with a check valve. 
     
     
       5. The dispensing appliance of claim 2, wherein said outlet channels have cross-sections which are proportional to their associated cylinders. 
     
     
       6. The dispensing appliance of claim 1, wherein the piston does not have a separated sealing means mounted thereon. 
     
     
       7. The dispensing appliance of claim 1, wherein said inlets each comprise an inlet port having a longitudinal axis, the longitudinal axes being arranged in a V-shaped configuration to form an angle of 20° to 90°. 
     
     
       8. The dispensing appliance of claim 7, wherein the inlet ports are provided with means such that longitudinal axes of the detachable containers are arranged parallel to each other. 
     
     
       9. The dispensing appliance of claim 8, wherein said inlet ports and the outlets of said detachable containers have different respective diameters. 
     
     
       10. The dispensing appliance of claim 1, further comprising a suspending device mounted to said frame which is longitudinally displaceable and lockable for suspending the appliance in a longitudinally balanced position. 
     
     
       11. The dispensing appliance of claim 1, wherein said pump assemblies each comprise a piston and a cylinder, and further comprising a trigger lever and means for advancing said pistons when the trigger lever is actuated and retracting said pistons back to an initial position automatically when said trigger lever is released. 
     
     
       12. The dispensing appliance of claim 11, wherein said advancing means comprises a control device at a handle acting in conjunction with the trigger lever for intermittent advancing of said pistons. 
     
     
       13. The dispensing appliance of claim 11, wherein said advancing means comprises means for stopping said pistons in any given position, including a position in which said pistons block said inlets. 
     
     
       14. The dispensing appliance of claim 1, wherein said pump assemblies each comprise a piston and a cylinder, and further comprising means for adjustably limiting a stroke of said pistons within said cylinders. 
     
     
       15. The dispensing appliance of claim 1, further comprising spring-loaded valve balls in fluid communication with said cylinders for evacuating air from an upper portion of said cylinders adjacent said inlets. 
     
     
       16. The dispensing appliance of claim 1, further comprising a drive shaft operably connected to each pump assembly and an electric drive acting upon the drive shafts. 
     
     
       17. The dispensing appliance of claim 1, comprising a drive shaft operably connected to each pump assembly and a manually operated drive acting upon the drive shafts. 
     
     
       18. The dispensing appliance of claim 1, comprising a drive shaft operably connected to each pump assembly and a compressed gas drive acting upon the drive shafts. 
     
     
       19. The dispensing appliance of claim 18, wherein the compressed gas drive comprises a drive cylinder which is secured to a rear frame plate disposed on a drive side of said frame and is terminated by a cylinder bottom, said drive cylinder being provided with a centrally disposed guiding tube secured in said frame plate and in said cylinder bottom, said guide tube serving as a supply duct for a compressed gas for advancing a piston plate which is disposed in said drive cylinder, said piston plate being guided by a wall of the drive cylinder and by said guiding tube, said piston plate comprising sealing means and receiving said two drive shafts the other ends of which are secured to pistons of said pump assembly, and wherein said rear frame plate comprises a first compressed gas supply duct connected to said guiding tube for supplying gas for an advancing stroke of said piston plate, and a second compressed gas supply duct for supplying gas for a return stroke of said piston plate. 
     
     
       20. The dispensing appliance of claim 19, further comprising outlets leading from said guiding tube to a rear drive cylinder cavity behind said piston plate, and a rubber-elastic shuttling member having a lip seal disposed behind said guiding tube, the shuttling member releasing said outlets leading to the rear drive cylinder cavity under the action of compressed gas from said first gas supply duct. 
     
     
       21. The dispensing appliance of claim 19, wherein said pump assemblies each comprises a piston and a cylinder, and further comprising a means for adjustably limiting a stroke of said pistons within the cylinders, said adjusting means comprising a bar having a first end secured to said piston plate and a second end projecting from said rear frame plate adjacent the housing of said pump assembly, the adjusting means further comprising an adjustable length stop cooperating with said bar. 
     
     
       22. The dispensing appliance of claim 21, wherein said bar is guided and sealed in said rear frame plate and is positioned near an upper frame rod of said frame, and wherein the adjustable length stop is positioned on the upper frame rod. 
     
     
       23. A dispensing appliance for at least two components, comprising: a respective pump assembly for each component, each of said pump assemblies having an inlet and an outlet, said inlets being connected to a detachable container which holds one of said components, and the outlets of said pump assemblies ending in a common outlet, wherein said pump assemblies are held in a frame which can be dismantled and reassembled;   wherein each of said pump assemblies comprises a piston and a cylinder, said cylinder having a cylinder head piece with an outlet channel for each cylinder which is blocked by a spring-loaded valve ball, and a rear closure piece, as well as a plurality of cylinder segments between said cylinder head piece and said rear closure piece with seals on and between said segments, said cylinder segments being dismountable and arranged to be pressed against each other by means of said frame.   
     
     
       24. The dispensing appliance of claim 23, wherein each of said pump assemblies and a front part of said housing are provided with air vents closed by screws. 
     
     
       25. The dispensing appliance of claim 23, wherein at least one of said segments is provided with an internal groove communicating with a container for wetting said piston. 
     
     
       26. The dispensing appliance of claim 23, wherein the rear closure pieces are designed as leakage compartments which are capable of being viewed from the outside. 
     
     
       27. A dispensing appliance for dispensing at least two components, comprising: a respective pump assembly for each component, each of said pump assemblies having an inlet for receiving a component from a respective supply container, and an outlet for dispensing the component from said pump assembly;   said pump assemblies each comprising a piston and a cylinder, said cylinder comprising a plurality of dismountable, coaxial cylinder segments with seals between said segments, said seals providing means for preventing leakage of the dispensed components between the pistons and the cylinders.